222112211122001 has 4 divisors (see below), whose sum is σ = 222117471121392. Its totient is φ = 222106951122612.

The previous prime is 222112211121991. The next prime is 222112211122003. The reversal of 222112211122001 is 100221112211222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222112211122001 - 2⁶ = 222112211121937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222112211122003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2629936355 + ... + 2630020808.

It is an arithmetic number, because the mean of its divisors is an integer number (55529367780348).

Almost surely, 2^{222112211122001} is an apocalyptic number.

It is an amenable number.

222112211122001 is a deficient number, since it is larger than the sum of its proper divisors (5259999391).

222112211122001 is an equidigital number, since it uses as much as digits as its factorization.

222112211122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5259999390.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 222112211122001 its reverse (100221112211222), we get a palindrome (322333323333223).

The spelling of 222112211122001 in words is "two hundred twenty-two trillion, one hundred twelve billion, two hundred eleven million, one hundred twenty-two thousand, one".